You should continue to repent to Almighty Allah from the sins you have committed, in addition to the promise that you will not commit those sins again as much as possible. If you returned to committing a sin because of the strong desire, or because of the influence of Satan, then do not despair from the mercy of Allah, and repent again, as the Almighty is Merciful to His slaves, and does not close the door of His mercy. Almighty Allah has promised His slaves with His mercy. He said: “Say: O My slaves who have been prodigal to their own hurt! Despair not of the mercy of Allah, Who forgives all sins. Lo! He is the Forgiving, the Merciful.”(53:39).